RedHat: RHSA-2021-1783:01 Moderate: tigervnc security, bug fix,
Summary
Virtual Network Computing (VNC) is a remote display system which allows
users to view a computing desktop environment not only on the machine where
it is running, but from anywhere on the Internet and from a wide variety of
machine architectures. TigerVNC is a suite of VNC servers and clients.
The following packages have been upgraded to a later upstream version:
tigervnc (1.11.0). (BZ#1880985)
Security Fix(es):
* tigervnc: certificate exceptions stored as authorities (CVE-2020-26117)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the Red Hat
Enterprise Linux 8.4 Release Notes linked from the References section.
Summary
Solution
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
References
https://access.redhat.com/security/cve/CVE-2020-26117 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/
Package List
Red Hat Enterprise Linux AppStream (v. 8):
Source:
tigervnc-1.11.0-6.el8.src.rpm
aarch64:
tigervnc-1.11.0-6.el8.aarch64.rpm
tigervnc-debuginfo-1.11.0-6.el8.aarch64.rpm
tigervnc-debugsource-1.11.0-6.el8.aarch64.rpm
tigervnc-server-1.11.0-6.el8.aarch64.rpm
tigervnc-server-debuginfo-1.11.0-6.el8.aarch64.rpm
tigervnc-server-minimal-1.11.0-6.el8.aarch64.rpm
tigervnc-server-minimal-debuginfo-1.11.0-6.el8.aarch64.rpm
tigervnc-server-module-1.11.0-6.el8.aarch64.rpm
tigervnc-server-module-debuginfo-1.11.0-6.el8.aarch64.rpm
noarch:
tigervnc-icons-1.11.0-6.el8.noarch.rpm
tigervnc-license-1.11.0-6.el8.noarch.rpm
tigervnc-selinux-1.11.0-6.el8.noarch.rpm
ppc64le:
tigervnc-1.11.0-6.el8.ppc64le.rpm
tigervnc-debuginfo-1.11.0-6.el8.ppc64le.rpm
tigervnc-debugsource-1.11.0-6.el8.ppc64le.rpm
tigervnc-server-1.11.0-6.el8.ppc64le.rpm
tigervnc-server-debuginfo-1.11.0-6.el8.ppc64le.rpm
tigervnc-server-minimal-1.11.0-6.el8.ppc64le.rpm
tigervnc-server-minimal-debuginfo-1.11.0-6.el8.ppc64le.rpm
tigervnc-server-module-1.11.0-6.el8.ppc64le.rpm
tigervnc-server-module-debuginfo-1.11.0-6.el8.ppc64le.rpm
s390x:
tigervnc-1.11.0-6.el8.s390x.rpm
tigervnc-debuginfo-1.11.0-6.el8.s390x.rpm
tigervnc-debugsource-1.11.0-6.el8.s390x.rpm
tigervnc-server-1.11.0-6.el8.s390x.rpm
tigervnc-server-debuginfo-1.11.0-6.el8.s390x.rpm
tigervnc-server-minimal-1.11.0-6.el8.s390x.rpm
tigervnc-server-minimal-debuginfo-1.11.0-6.el8.s390x.rpm
tigervnc-server-module-1.11.0-6.el8.s390x.rpm
tigervnc-server-module-debuginfo-1.11.0-6.el8.s390x.rpm
x86_64:
tigervnc-1.11.0-6.el8.x86_64.rpm
tigervnc-debuginfo-1.11.0-6.el8.x86_64.rpm
tigervnc-debugsource-1.11.0-6.el8.x86_64.rpm
tigervnc-server-1.11.0-6.el8.x86_64.rpm
tigervnc-server-debuginfo-1.11.0-6.el8.x86_64.rpm
tigervnc-server-minimal-1.11.0-6.el8.x86_64.rpm
tigervnc-server-minimal-debuginfo-1.11.0-6.el8.x86_64.rpm
tigervnc-server-module-1.11.0-6.el8.x86_64.rpm
tigervnc-server-module-debuginfo-1.11.0-6.el8.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
Topic
An update for tigervnc is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux AppStream (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64
Bugs Fixed
1841537 - StandardError doesn't work with Xvnc as socket activated service
1853608 - Fail to start tigervnc server
1880985 - Rebase tigervnc to 1.11.0
1882841 - CVE-2020-26117 tigervnc: certificate exceptions stored as authorities
1883415 - Tigervnc cannot use boolean values in config files
1897498 - Starting the xvnc service starts a vncsession process and goes into zombie state
1897504 - Add vncserver wrapper script again to allow non-root users to start and stop the service